Gambling revenues at Illinois riverboats, including the Par-A-Dice, continue to slide since the implementation of a July 1 state tax increase. Revenues for the first quarter of the state's fiscal year, which began July 1, dropped 10.6 percent from the same time last year. "This is basically what we predicted would happen," said Tom Swoik of the Illinois Casino Gaming Association.Revenues for the first quarter of the state's fiscal year, which began July 1, dropped 10.6 percent from the same time last year. Read More.